planococcus bacteria characteristics

Nine loci account for proteins that protect and repair translational factors. haemolysans, Lactococcus Leuconostoc, Chorismate synthase and D-3-phosphoglycerate dehydrogenase are both involved in amino acid synthesis and increase expression under both subzero and halophilic conditions. Phosphoglycerate mutase, UTP-glucose-1-phosphate uridylyltransferase, and ATP synthase are all proteins that decrease in abundance in response to cold-stress conditions. FtsH and FtsZ are both cell division proteins that increase in abundance at subzero conditions. In subzero conditions (-15ºC), while most metabolic enzymes are repressed, the tricarboxylic cycle and ATP synthase keep the cell alive. As stated before, they are gram-positive, aerobic, and both psychrotolerant as well as halotolerant. 43 loci account for proteins that respond to osmotic stress and adaptation to high salt conditions. The study involved three growth conditions: a control at 23ºC, a subzero condition at -15ºC, and a halophilic condition at control temperature 23ºC and a NaCl content of 12%. (bvsalud.org)To this end, two approaches were used, i.e. Halotolerant will grow in nutrient agar Description and Significance. In contrast, the high abundance of saturated fatty acids in subzero conditions provide evidence for lower cell fluidity, in order to protect the cell when metabolic energetics are low due to temperature. Astrobiology involves the study of life on Earth in order to predict the conditions of extraterrestrial life, ultimately to explore origins of life in the universe. (thefreedictionary.com)A facultative alkaliphilic protease-producing gram-positive rod-shaped bacteria (EMGA 5) was isolated from mangrove soil and confirmed as Bacillus flexus by the 16S rDNA sequence. The morphological characteristics that are consistent with the isolate and across the genus are: gram-positive membranes, cocci cell shape, colonies are yellow orange in color, catalase positive and an aerobic oxygen class 5. P. halocryophilus contain many genomic adaptations to both cold and osmotic stress through proteins that function in response to stress from cold temperatures, high salinity, and general stress. In order for two organisms to be defined as part of the same species, the threshold of comparison is designated as greater than or equal to 70% similarity by DNA-DNA comparison. Micrococcus, genus of spherical bacteria in the family Micrococcaceae that is widely disseminated in nature. An analysis of this strain's phenotypic, chemotaxonomic, and genomic characteristics established the relationship of the isolate with the genus Planococcus.Strain Y74 T was able to grow between 4 and 42°C (with an optimum temperature of 28°C) at pH values of 6–8.5 and in 0%–7% (w/v) … The classical phenotypic characteristics of actinobacteria comprise morphological, physiological, and biochemical features. Its hypothesized that the purpose of this cellular envelope addition is to provide extra protection to the interior of the cell during low-temperature replication. strain S5 was described to be able to grow on salicylate or benzoate [11], and Planococcus alkanoclasticus was capable of degrading linear alkanes [9]. coccus-shaped; gram-positive; motile; aerobe; psychrophilic; Bacteria; genome sequence Translation is the theoretical rate-limiting step for protein synthesis of psychrophiles, on account of diffusion rate reduction in subzero conditions. DD-transpeptidases are in charge of peptide chain cross-linkages in cell wall synthesis, and is increased in abundance by nine-fold under subzero conditions. In colonies, P. halocryophilus appears an opaque, shiny orange color in clusters measured between 2.0-3.0 mm. according to their biochemical and chemotaxonomic characteristics. The P. halocryophilus genome is made up of 35 contiguous strands, composed in a total of 3,428,475 base pairs, with a content of G+C base pairing at 40.5%. To hone in on parameters for microbial survivability, researchers from the Technical University of Berlin, Tufts University, Imperial College London, and Washington State University conducted tests with Planococcus halocryophilus, a bacteria found in the Arctic permafrost. RsmB and RsmE are both rRNA small subunit methyltransferases, involved in rRNA stabilization and translation regulation, quadrupling and doubling in abundance respectfully for subzero conditions. Materials and methods Soil samples were collected at random sites around lake Zub, Schirmacher oasis (70°45'12"S and 11°46'E), Antarctica, in the third week of January 1985. Bacterial growth at −15 °C; molecular insights from the permafrost bacterium Planococcus halocryophilus Or1. mucilaginsos, Streptococcus, Trichococcus flocculiformis, Vagococcus, anaerobes Coprococcus, Peptococcus niger , Peptostreptococcus, Ruminococcus, [18], Some proteins involved in stabilizing transcription and translation processes in cold conditions include cold-shock proteins, RNA helicase, and protein chaperones such as ThiJ. A hallmark of the genus Planococcus is that they are usually halo-tolerant gram-positive bacteria that frequently inhabit Antartica 4. PemK/MazF is a transcriptional regulator that is only detectable at subzero conditions. Figure 5 highlights the microscale habitat of P. halocryophilus through (a), an enhanced photo of bordering ice crystals, focused on the brine vein spaces in between. It plays a critical role in modulating the two synthesis pathways, as well as unsaturated fatty acid accumulation in the cell membrane. In order to maintain critical functions within transcription, translation, and regulation, P. halocryophilus contains specific cold-adapted proteins, observed in many cryophiles and mesophiles, that are able to provide essential functions under both cold and osmotic stress. [20], One of the proteins concerned with fatty acid synthesis was a phosphate called acyl-ACP acyltransferase (PlsX). Expand. But it was distinctly different from P. alkanoclasticus, which exists only as rods, is mesophilic and phosphatase positive, can hydrolyze starch, cannot utilize succinate, glutamate, or glucose, and cannot acidify glucose. Bacteria are the earliest microorganisms on the earth. [23], Proteins associated with amino acid synthesis include uridine kinase, homocysteine S-methyltransferase, chorismate synthase, D-3-phosphoglycerate dehydrogenase, and arginase. The bacterium is Gram-positive and possesses all the characteristics of the genus Planococcus. Planococcus plakortidis sp. The PlsX phosphate provides a linkage between the fatty acid synthase and phospholipid synthesis pathways, and is increase by nine-fold in sub-zero, however is not observed in the other two conditions. They are proteins associated with glycolysis, glucose metabolism, and ATP synthesis respectively. They may be domed, shining, mucoid-type colonies with radial striations or may appear smooth with entire edges. They are normal Planococcus is a Gram-positive, psychrotolerant, halophilic bacterium, which was initially proposed by Migula (1994) in 1894. Figure 3 presents a pie chart for the distribution of genes in correspondence to specific functions. pluton, Pediococcus, Saccharococcus thermophilus, Staphylococcus, , while the Sarcina, Catalase positive:Deinococcus,Marinococcus These proteins are found to be abundant in all three conditions (control temp, low temp, and high salt), which suggests that P. halocryophilus is prepared to react quickly to temperature fluctuation. [9]. Classification of bacteria helps scientists, medical microbiologists, and epidemiologists recognize different bacterial species and understand the effects of similar species. [11]. Bacteria Bacillus megaterium, Enterobacter gergoviae and Planococcus citreus can describe histidin as histamin. nov., isolated from the marine sponge Plakortis simplex (Schulze). Homocysteine S-methyltransferase is an enzyme complex that catalyzes methionine production from the amino acid homocysteine, and is most abundant in -10ºC conditions. Eight loci account for proteins that function in membrane and cell envelope alteration. (bvsalud.org)To this end, two approaches were used, i.e. By Ethan Hanson Classification: Kingdom: Bacteria Phylum: Firmicutes Class: Bacilli Order: Bacillaes Family:Planococcaceae Genus: Planococcus Species: Planococcus halocryophilus Planococcus halocryophilus is an aerobic, gram-positive bacterium that is found in arctic permafrost. While this function also contradicts the findings (of Mykytczuk et al., 2013), further research must be conducted in order to understand the role of these abundances. First, the environment in question; the physical, chemical and biological facets that make that environment unique. www.sci-news.com/space/article01105-planococcus-halocryophilus-bacterium.html. Second, the life form in question; how can the organism be classified and what components are distinctive of its ability to survive. compare with Marinococcus, Migula W. (1894) Uber Thirteen orange-pigmented bacteria associated with cyanobacterial mat samples collected from four different lakes in McMurdo, Antarctica, were isolated. The idea is that patterns of life in Earths harshest environments (of those that can be compared to environments on other planets and moons) are the best way to determine what traits life would need to survive in those environments, and accordingly, what degree of evolution would it take for similar life to possibly inhabit these extraterrestrial environments in question. These veins provide liquid water below freezing point on account of the high saline content that keeps the water from freezing. The adult female lacks wings and resembles a nymph. Micrococci are microbiologically characterized as gram-positive cocci, 0.5 to 3.5 μm (micrometres; 1 μm = 10-6 metre) in diameter. Family:Planococcaceae The wide array of proteins creates mechanisms of regulation and repair, act as chaperones, and function as shock proteins. This figure functions as visual representation for only some of the many understood adaptive and synergistic traits and mechanisms that P. halocryophilus and other cryophiles must demonstrate and regulate in order to survive in high stress environments. radioresistant cocci called Deinococcus This determined that OR1 would be designated with the genus Planococcus and affiliated with the Planomicrobium clade. [25], Proteins connected to energy metabolism include phosphoglycerate mutase, UTP-glucose-1-phosphate uridylyltransferase, ATP synthase, FMN reductase, glutamate-1-semialdehyde aminotransferase, ferredoxin, NADPH dehydrogenase, naphthoate synthase, Ccs1/ResB, fructokinase, and CsdA/SufS. Finally, there are 11 loci that account for proteins that respond to miscellaneous stress factors, one of which is an SOS-response repressor. They can grow at temperatures between -15 and 37ºC, however their optimal temperature of growth is approximately 25ºC. The ISME Journal 7, 1211–1226; … The bacterium is Gram-positive and possesses all the characteristics of the genus Planococcus. Ensembl Bacteria is a browser for bacterial and archaeal genomes. Stomatococcus Figure 1 exhibits an Arrhenius plot of log transformed growth rate constants for OR1. Micrococcus, Seven loci account for proteins stat function as sigma factors. to the Genus. Strain Y74 T was able to grow between 4 and 42°C (with an optimum temperature of 28°C) at pH values of 6–8.5 and in 0%–7% (w/v) NaCl. Ensembl Bacteria. Planococcus halocryophilus (OR1) cells are non-spore forming motile cocci that occur individually or in pairs, with a diameter of 0.8-1.2 micrometers. As an alternative under extreme osmotic and subzero stress conditions, specialized sigma factors can be appointed to maintain signal transduction. Colony morphology for these organisms vary depending upon the type of media on which they are cultivated. RNAP∑ is a subunit of the RNA polymerase enzyme and is abundant under cold conditions and absent in control, with a stress response function that is largely unknown. [28]. Here, the optimal temperature of growth is projected at 25ºC with a maximum 10^8 colony forming units per mL, and a significant drop in growth rate when temperature falls below 10ºC. Proteins engaged in the carotenoid (lycopene) synthesis include two enzymes, carotene desaturase and phytoene desaturase, which were most abundant at subzero and halophilic stress conditions. Bacteria Bacillus megaterium, Enterobacter gergoviae and Planococcus citreus can describe histidin as histamin. MurB plays an enzymatic role in peptidoglycan synthesis and is more than doubly expressed under subzero conditions. Ensembl Bacteria. P. halocryophilus only accounts for a small fraction of the flourishing microbiota in arctic environments, and contributes to the large-scale emission of stored carbon dioxide that occurs alongside the melting of the permafrost. The following article will cover a scientific flowchart that will help you understand the different groups of bacteria clearly. Planococcus citreus Migula ATCC ® 14404 ™ freeze-dried For-Profit: $376.00 Non-Profit: $319.60 This is contradictory to findings discussed earlier (in Mykytczuk et al., 2013) where saturated fatty acids were abundant in the cell membrane in subzero temperatures in place of unsaturated, which was the other way around for most psychrophiles and makes functional sense on account of increased membrane fluidity from long chain UFAs. Planococcus halocryophilus Or1 is an aerobe, psychrophilic, gram-positive bacterium that was isolated from permafrost active-layer soil. When they are found in drinking water then the water is aid to be contaminated with fecal matters. Kaur I(1), Das AP, Acharya M, Klenk HP, Sree A, Mayilraj S. Author information: (1)MTCC-Microbial Type Culture Collection and Gene Bank, CSIR-Institute of Microbial Technology, Chandigarh 160 036, India. They are normal Very few outliers showed greatest abundance in control conditions. Phylum: Firmicutes These are taken from the databases of the International Nucleotide Sequence Database Collaboration, the European Nucleotide Archive at the EBI, GenBank at the NCBI, and the … ROS detoxification requires the removal of adjunct RES from which carbonyls can be recycled and used under stress conditions in metabolism. Third, the relationship between the life and the environment that allow for the organism to grow, reproduce, and interact with that environment. Micrococci are usually not pathogenic. The Planococcus sp. Strain Y74 T was an isolate from the sandy soil in the town of Huatugou, Qinghai–Tibet Plateau, China. The adult male is slightly larger, has long wax filaments on the posterior end of the body, and has functional wings. Enterobacter species produce round, iridescent, flat, nonpigmented, irregular-edged colonies, when grown on nutritive agar. “Mechanisms of Subzero Growth in the Cryophile, https://www.ncbi.nlm.nih.gov/pubmed/23389107, https://microbewiki.kenyon.edu/index.php?title=Planococcus_halocryophilus;_growth_in_subzero_halophilic_conditions&oldid=135955. From the brine veins that would exist between ice crystals on Mars’ surface, the most likely lifeforms to exist would need to contain many analogous traits to that of a cryophile such as P. halocryophilus. [16] Streptococcus organisms are Gram positive, microaerophilic and non-motile bacteria. In (b), the photo is enlarged to reveal a brine pocket within the vein, a likely candidate for major microbiological activity, where (c) shows the same brine pocket but under epifluorescence to provide evidence of the inhabiting cryophilic bacteria. but poor growth less than 1% or more than 15% NaCl These characters make them immortal, omnipresent and also very versatile. This extremophile is characterized as both halophilic and psychrophilic, thriving in an environment of high salinity as well as an extremely low temperature. This disruption of the global carbon cycle has been shown to accelerate melting effects of global warming. The most basic way to answer this question is to identify a presence of life; this provides a proxy for what makes that specific environment able to sustain life. It has been reported on over 200 host-plant species belonging to 191 genera and 82 families, and can seriously damage many crops, particularly citrus and glasshouse tomatoes. OR1 also measured out to be the most tolerant to NaCl (ahead of P. maritimus at 17% NaCl). Five loci account for cold shock proteins. In general, the colonies appear as white, smooth colonies. Fructokinase is an enzyme that breaks down the simple sugar fructose as an alternative to glucose metabolism and is abundant as a general stress response because fructose is a metabolite that is tolerant to stress conditions. The isolates holotolerance was not tested but the similar cellular membrane composition and habitat conditions indicate that this genus is likely correct. The most important foundational question of astrobiology is what factors constitute habitat suitability, in other words, what must an environment require to be habitable. Pseudouridine synthase B is a ribosomal large subunit implicated as an RNA chaperone and in the initiation of translation, increasing five-fold in abundance under subzero conditions. [1]. [2][3]. Phylogenetic and signature nucleotides analyses revealed that strain Y42T belongs to the genus Planococcus. It is non-sporulating, motile and has A4alpha type peptidoglycan, MK-7 and MK-8 as the major menaquinones and anteiso-C (15:0) as the major fatty acid. [15] Environments known to contain Enterobacter Micrococci are usually not pathogenic. This is due to the preference of increasing translation rates at -15ºC conditions, however translation must be supervised to some extent in order to avoid error while maintaining efficiency. These proteins can be referenced in figure 6 under the cell wall synthesis and modification label. A major physiological feature that distinguishes P. halocryophilus is its transformation of the cellular envelope at temperatures below zero. It has a light gray longitudinal line down its back. This data is important to membrane fluidity of P. halocryophilus because of the relative abundance of saturated and unsaturated fatty acids. At <10ºC, the R2 value (slope) increases from approximately 0.49 to approximately 0.94. Micrococcaceae are not a coherent group. These proteins are encoded by roughly 90 known loci of the OR1 strand genome. In DNA/RNA replication, specialized helicases and recombination factors are dependable to drive replication in subzero conditions. Craters may form around the colonies on some media. Twelve of the isolates, which were coccoid in shape, were very similar and possessed all the characteristics of the genus Planococcus and represent … ], [Feller, G. “Cryosphere and Psychrophiles: Insights into a Cold Origin of Life” Life (Basel, Switzerland)., U.S> National Library of Medicine, 11 June 2017, www.ncbi.nlm.nih.gov/pubmed/28604605. P. halocryophilus contains three ABC transporter binding proteins that are incorporated in the transport of cysteine, manganese, and ferric iron transport respectively. , pale yellow to light pink within P. halocryophilus because of the body, and is expressed. 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